Cra would be more beneficial, since you can wear other equips, like Tyrant or Nova along side it, while still maintaining the full set-effect.[/quote]

I plan on getting Tyrant equips in the future when I have more funds. But I just wanted to know which set effect will increase my range more: Full CRA or Full Empress. So Tyrants are pretty much out of the question for now

Clean either doesnt boost your range much. I always go with Emp because with everyone saying no to empress lately I get them dirt cheap for all my characters (<200m for the full set, and usually <100m if I dont go for the shoulder) and they I potential them and scroll them myself. When I decide seriously on a main I will actually invest in decent CRA gear

I would say empress, yes you can get tyrant/dojo gloves but the chance of you getting any of that isn't likely with no funds.
Also CRA is more geared toward bossing(pdr/boss) rather than Empress which has other beneficial set effects and isn't that
much weaker while being significantly cheaper.

Also to note CRA worn clean is a waste if you plan on upgrading unless you plan on extracting them later on or doing it by scratch which costs a fair bit
to do well

It will be root abyss even if you aren't wearing shoes, gloves, or a cape. The set effects by themselves are comparable, but the root abyss weapon is vastly (30att+, 10% ignore defense and 30% boss damage) superior to empress.